CVE-2026-115449
LOW
INFO
Priority: 0.01
BB Relevance:
47/100
Published: 2026-10-22
Modified: 2026-10-23
First seen: 2026-10-29
Status: active
Attack Surface
Network
No Interaction
Scope Change
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
Low
UI:
None
S:
Changed
C:
Low
I:
None
A:
None
Description
A flaw was found in libslirp. When handling ICMP echo requests, the reply length is not updated to match the actual data received from the host. Under specific conditions where the normal ICMP socket is unavailable, this length mismatch causes the host's real IP address to be leaked to the guest in the echo reply, breaking the NAT isolation that user-mode networking is expected to provide.